Wuhan Baishazhou bridge is an important part of the Third Ring Expressway and one of the important river crossing channels in the south of the main city. Due to insufficient traffic capacity, bridge diseases and other reasons, it has been unable to meet the functional requirements of high efficiency and smoothness of the fast loop line. Taking advantage of the construction opportunity of the river crossing channel of Wuxi high-speed railway, a new Baishazhou highway and railway bridge will be built at the upstream of Baishazhou bridge as a double track bridge to undertake the function of rapid river crossing of the third ring road. The construction of the new bridge has changed the traffic system based on the old bridge. How to reshape a more efficient river crossing traffic system is a key and complex technical problem. Based on the analysis of construction conditions, functional positioning, construction scale and construction standards, this paper puts forward three new river crossing traffic systems and corresponding overall schemes according to different research angles, determines the recommended schemes through comprehensive comparison, and focuses on the in-depth demonstration of the schemes of parrot interchange and Qingling interchange, which are important transportation hub nodes of cross-strait connection. The summary and analysis of the overall design scheme of the connection project of Baishazhou highway and railway bridge in this paper can provide a meaningful reference for the reconstruction of the traffic system of the river crossing double track channel of similar expressways.